Definition

column (Property)

Name of a column in the logical table. When generating RDF triples from a logical table row, value from the specified column is used as the subject, predicate, or object (based upon the specific domain).

Definition

graph (Property)

An IRI reference for use as the graph name of all triples generated with the GraphMap.

Definition

The URI of this property is http://www.w3.org/ns/r2rml#graph

This property is an
object property.

graph Map (Property)

Specifies a GraphMap. When used with a SubjectMap element, all the RDF triples generated from a logical row will be stored in the specified named graph. Otherwise, the RDF triple generated using the (predicate, object) pair will be stored in the specified named graph.

Definition

inverse Expression (Property)

An expression that allows, at query processing time, use of index-based access to the the (underlying) relational tables, instead of simply retrieving the table rows first and then applying a filter. This property is useful for retrieval based on conditions involving subject, predicate, or object generated from logical table column(s) and involves some transformation.

Definition

The URI of this property is http://www.w3.org/ns/r2rml#inverseExpression